Saw guard



March 3, 1931.

w. ESKRIDGE 1,795,203

SAW GUARD 2 Sheets-Sheet 1 Filed June 11, 1930 llorney Patented Mar. 3,1931 rain AiTiEis PAT entice p .='\VILBUR ESKBIDGE, FLOUISVILLE,.KENTUCKY, ASSIGNOR OE ONE-THIRD TOARTHURF FLEISCHAKER ANDONE-THIBD:TO VINCENT O. PATTERSON, BOTH 0F LOUISVILLE,

KENTUCKY Application filed June 11,

saw for actuation thereby in a mannerto automatically'move the guardtooperative and a inoperative position when the saw is in use.

Qther objects-of the invention are to pro- "vide a saw'guard 0f thecharacter described which will be simple in" construction, strong,

' durable, efficient in itsnse, and which maybe manufactured at lowcost.

All of the foregoing and still further objects and advantages of theinvention twill "become apparent from a study of theifollowingspecification, :taken ::in connection iii with the accompanyingdrawings,*"wherein like reference characters designate correspondingparts throughout the several views, and wherein:

' Figure 1 is a-view in side elevatron'showlng a saw guard constructedinaccord'ancewith this invention mounted inoperative position on a out01f saw,

so Figure 3'is a fragmentary view initop plan of the guard, I

' Figure 4 1s a vertical:crossisecti'onal' view through the guard,

Figure 5 is a detail view-inrperspective of .;i the linkwhichpivotallyconn'ects the guard tothe actuating mechanism.

Referring to the drawings :in detail, it will be seen that referencenumerals 1 designate a conventional saw Vt-able intthe lower por- 40tion of the supporting structure of which: is

journalled a transverse shaft 2 mounted for oscillatory movement: andhaving fixed there on engaging'one end anoperatingfoot pedal 3. -Alsofixed on an intermediate'portion of 4.5 the shaft 2 is theswingablei'saw supporting frame 41 through the .upp'eriend portion of Ywhich is rotatably mounted the arbor 5 upon one end portion of which isfixed a saw disk 6 which projects through a slot (not shown) providedtherefor in the usual manner in the Figure 2 is a view infrontzelevation there-' i .SAW GUARD 1930. Serial No. 460,473.

1 top of the table 1. Suitable driving mechaper side and at one endofthe block is a uard of appropriate configuration designate generallybythe reference numeral'll and comprlsing askeleton frame 12 havlng'aforami nous side and top'walls 13,-as best seen in Figure 1 of thedrawings, the workor table engaging surfaces of'the frame 12'are'provided With suitable pads 14.

Projecting laterally from oneside "ofithe supporting structure-of thetable 1 is stub shaft 15 upon which is mounted for' swin ing movement:an arm 16 to the hubportion of'which isfixed an arm l'i 'whichisdisposed atanangle with respect to the arm 16 und 79 has fixed 'on'itsfree endportion aweight 1.8.

The free end of the'arm 16 isoperativelycom nected to the intermediateportion of the saw supporting frame 4; through-"theunedium of theangularbar 19. A'lever 20 'has' an inter medi'ateportion pivotally connectedtoan up- 7 per portion of the table supporting structure --as at 21,- thelower end portion of said lever 20-being operatively connected to theweight 18 for actuation thereby through the medium 80 of-the pin andslot connection 22.

-A longitudinally curved bar 23 is pivotally mounted as at 21forswinging movement on the upperend portion of the-lever 20 'and astanding-ear27 on the frame 12 of the guard An integral stop lug 28 isprovided on'the' upper'end portion of the lever 20 for engageinent withthe bar 23 in amanner to limit the swinging movement of saidbar Vin-onedirec- In use, the'saw 6 is normally housed in'the recessi9 'ofx theblock 8. It is understood, of course'; that thesaw is alwaysxreturned tothe 1 position by the weight, when the saw is housed in the block 8, theguard 11 is in raised or inoperative position. The work is thenpositioned on the table 1 in the usual manner and the operator depressesthe foot pedal 3 on the raised position toward the position illustratedto advantage in Figure 1 of the drawings. The saw is thus swungoutwardly from the block 8 into engagement with the work and the guard11 simultaneously starts to swing downwardly.

The guard 11 will have reached its lower most position before the sawreaches the limit of its forward swinging movement through the medium ofthe pin and slot connection 22 but after the cutting operation has beencompleted. When the operator releases the foot pedal 3, the weight 18will gravitate toward a vertical position from the position illustratedin Figure 1 and the saw is thus returned to its position within theblock 8. The pin and slot connection 22 permits an initial movement ofthe saw (5 before the guard 11 begins to move upwardly. It will furtherbe apparent that the pivotal connection 24 and the stop lug 28 willpermit an initial swinging movement of the lever 20 with the weight 18before said bar n3 will begin to swing with the lever 20 to raise theguard 11.

It is believed that the many advantages of a saw guard constructed inaccordance with this invention will be readily understood, and althoughthe preferred embodiment of the invention is as illustrated anddescribed, it is to be understood that changes in the details ofconstruction may be had which will fall within the scope of theinvention as claimed.

What is claimed is:

1. The combination with a saw table and a swinging saw frame having asaw rotatably mounted thereon and a stationary housing mounted on thetable for the reception of the saw in its inoperative position, meansfor manually swinging the saw to operative position out of the housing,a gravity actuated weight mounted for swinging movement and operativelyconnected with the saw frame for returning the saw to inoperativeposition in the housing, a guard hingedly mounted for swinging movementon the housing for disposition over the saw when said saw is in itsoperative position, a lever mounted for swinging movement on the tableand having a pin and slot connection with the weight for actuationthereby, a bar hingedly mounted on the lever, a link pivotallyconnecting the bar to the guard in a manner to swing said guard tooperative and inoperative position upon actuation of the lever, andmeans for limiting the swinging movement of the lever and the barrelative to each other in one direction.

2. The combination with a saw table and a swinging saw frame having asaw rotatably mounted thereon and a stationary housing mounted in thetable for the reception of the saw in its inoperative position, meansfor manually swinging the saw to operative po sition out of the housing,a gravity actuated weight mounted for swinging movement and operativelyconnected with the saw frame for returning the saw to inoperativeposition in the housing, a guard hingedly mounted for swinging movementon the housing for disposition over the saw when said saw is in itsoperative position, a lever mounted for swinging movement on the tableand having a pin and slot connection with the weight for actuationthereby, a bar hingedly mounted on the lever, a link pivotallyconnecting the bar to the guard in a manner to swing said guard tooperative and inoperative position upon actuation of the lever, a stoplug on the lever engageable with the bar in a manner to limit theswinging movement of said bar in one direction, and resilient meansconnected with the bar for yieldably urging the same toward the stoplug.

3. The combination with a saw table and a swinging saw frame having asaw rotatably mounted thereon and a stationary housing mounted on thetable for the reception of the saw in inoperative position, means formanually swinging the saw to operative position out of the housing, astub shaft extending from the table structure, an arm mounted forswinging movement on the stub shaft, another arm fixed to the firstnamed arm and extending at an angle therefrom, a gravity actuated weighton the free end portion of the second named arm, an angular baroperatively connecting the swinging saw frame to the first named arm,said bar, the arms and the weight constituting gravity actuated meansfor returning the saw to its inoperative position within the stationaryhousing, a lever pivotally mounted intermediate its ends on the cablesupporting structure and having a pin and slot connection with theweight for actuation thereby, a longitudinally curved bar mounted forswinging movement on one end of the lever, a stop lug on said one end ofthe lover engag-eable with the bar in a manner to limit the movement inone direction and for connecting said bar for movement in unison withthe lever, a coil spring connected to the stop lug and the bar in amanner to yieldingly urge said bar toward the stop lug. and a linkpivotally connecting the bar and the guard together in a manner to swingthe guard to operative and inoperative posit-ion upon actuation of thelever.

In testimony whereof I affix my signature.

WILBUR ESKRIDGE.

